<template>
  <div class="todo-header">
    <input type="text" v-model="count" placeholder="请输入你的任务名称，按回车键确认" @keyup.enter="addTitle"/>
  </div>
</template>

<script lang="ts">
import {defineComponent} from "vue";
export default defineComponent({
    name:"Header",
})
</script>

<script lang="ts" setup>
import {TodosType} from "*.vue";
import {nanoid} from "nanoid";
import {ref} from "vue";

const props = defineProps<{todoList:TodosType}>()
const count = ref("")
const addTitle = ()=>{
    if(!count.value.trim()) return alert("请输入内容")
    if(props.todoList.find(item=>item.thing === count.value)) return alert("请勿重复输入同样内容");
    const newTitle = {id:nanoid(),thing:count.value,done:false}
    count.value = ""
    props.todoList.unshift(newTitle)
}

</script>

<style scoped>
/*header*/
.todo-header input {
    width: 560px;
    height: 28px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 4px 7px;
}

.todo-header input:focus {
    outline: none;
    border-color: rgba(82, 168, 236, 0.8);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>